Jane Street
TECX icon

Jane Street’s Tectonic Therapeutic TECX Stock Holding History

Jane Street’s Portfolio TECX Stock Details TECX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-69,000
Closed -$2.13M – 13431
2026
Q1 		$2.13M Buy
+69,000
New +$1.7M ﹤0.01% 4961

Other funds holding TECX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FLAM
First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $288M AUM 313.93% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
VPC
Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

Jane Street's TECX Position: Q2 2026 in Review

Jane Street opened a new position in Tectonic Therapeutic (TECX) in Q2 2026: 65,821 shares worth $2.26M. The stake represents ﹤0.01% of the portfolio and ranks #4951 among its holdings. This is a return to the name: Jane Street previously reported a position in TECX as recently as Q4 2025.

Jane Street first reported a position in TECX in Q3 2020 and has held it in 8 quarters since. 122 funds tracked by Wall St. Rank hold TECX as of Q2 2026.

  • Jane Street held 65,821 shares of Tectonic Therapeutic worth $2.26M as of Q2 2026.
  • Tectonic Therapeutic was a new Jane Street position in Q2 2026.
  • Tectonic Therapeutic made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #4951 holding.
  • Jane Street first reported a position in Tectonic Therapeutic in Q3 2020 and has held it in 8 quarters since.
  • 122 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.